using System;

public class Person{

    private string firstname,secondname;

    private DateTime dob=new DateTime();

    public string fname{

        get{

            return firstname;

        }

        set{

            firstname=value;

        }

    }

    public string lname{

        get{

            return secondname;

        }

        set{

            secondname=value;

        }

    }

    public DateTime dobirth{

        get{

            return dob;

        }

        set{

            dob=value;

        }

    }

    public int GetAge(DateTime dob)

    {

        DateTime today=DateTime.Now;

        int age=today.Year-dob.Year;

        return age;

    }

    public string Adult(int age){

        if(age>=18)

        {

            return "Adult";

        }

        else{

            return "Child";

        }

    }

    public void getDetails(){

    Console.WriteLine("Firstname: "+fname);

    Console.WriteLine("Lastname: "+lname);

​

    }

}

public class Program

{

    public static void Main()

    {

        Person p=new Person();

        Console.WriteLine("Enter your firstname:");

        p.fname=Console.ReadLine();

        Console.WriteLine("Enter your lastname:");

        p.lname=Console.ReadLine();

        Console.WriteLine("Enter your date of birth:");

        p.dobirth=Convert.ToDateTime(Console.ReadLine());

        p.getDetails();

        int age=p.GetAge(p.dobirth);

        Console.WriteLine("Age: "+age);

        Console.WriteLine(p.Adult(age));

    }

}